Brake



F'. C. FRANK Aug. 23, 1938.

BRAKE Filed March 1l, 1932 l.: Il

' FREDERlcK C INVENTOR. FRANK f m ATTORNEY Patented Aug. 23, 1938 UNITEDSTATES PATENT oFFlcE A2,122,725y BRAKE Application March 11, 1932,Serial No. 598,252

7 Glaims.

l l component parts of the brake be `made relatively small so that theywill occupy the minimum amount of space. brake has a suflicently smalldiameter to` fit snugly within the confines of a flange on the l wheel,preferably a tire retaining flange, and the component parts perform dualfunctions.

An object of the invention is to provide a brake including a relativelyfew parts assembled in a compact unitwhi'ch may be quickly assembled andwill efficiently perform its intended function. Y Another object of theinvention is to provide a brake structure of the disc type including afixed member, an axially movable member and a rotatable member betweenfixed and axially movable members, and to so construct and arrange theseparts that the fixed member may perform a plurality of functions to theend that the number of component parts may be greatly reduced. vAfeature of the invention is to provide a brake structure including acombination axle shoulder, a dust shield support, and a friction elementper Another feature of the invention is to provide a brake structurecomprising a fixed member including a friction element, a member movableaxially thereon, and means carriedby the fixed member'for moving theaxially movable member.

Another feature of the invention is a fixed member including a frictionelement, a member slidable on ,the fixed member also including afriction element, and a rotatable and axially movable member positionedbetween the friction element together with a means on the fixed memberfor moving the slidable member.

Otherpbjects and features of the invention will appear from thefollowing description taken in connection with the drawing, which formsa part of this specification, and in which:

450 Figure 1 is a vertical sectional view of a wheel and its associatedbrake.

Figure 2 is a section taken on a line 2-2 Figure 1, and,

Figure 3 is a side elevation of a portion of a wheel and its associatedbrake.

Wheels In the present invention the l (c1. v1mi-1a) Referring to thedrawing for more specific details of the invention, III represents anaxle having positioned thereon a sleeve I2 provided with a,circumferential ange I4. The sleeve is secured to the axle by asuitable key I6. As 5 shown, the key prevents rotatable and axialmovement of the sleeve; thus, the sleeve provides a highly desirablecollar for the axle. The sleeve also has a shoulder vI8 for thereception of a grease retaining washer 20. 10

The axle has positioned thereon for rotation,

a wheel 22 having suitable bearings 24 and 26.

The bearing 24 engages the sleeve l2 and the bearing 26 is engaged by aretaining nut 28 threaded on the end of the axle. The wheel has 15 theusual tire retaining flanges 30 and 32. 'I'he tire retaining flange 30is provided with a plurality of radial lugs or bosses 34. These bossesextend into corresponding notches 36 in an annularfriction element 38.The inter-locking relation between the lugs 34 on the tire retainingflange 3|) and the notches 36 in the friction element 38 is such thatthe friction element 38 rotates with the wheel, and yet is free foraxial movement relative thereto. 25K

The sleeve I2 has positioned thereon for axial movement a disc 40 towhich is suitably secured a friction lining 42 oppositely disposedwithrespect to a similar lining 44 suitably secured to flange I4. Thefriction linings are arranged on 30 oppositely disposed sides of thefriction element. 3B and are adaptable for engagement therewith.

The axially movable member 40 is connected by a plurality of bolts 46arranged parallel to the axis of the sleeve l2 and passing through 35' Asuitable openings in the ange I4, to a ring or collar 4B engaged by asuitably operated means, such as a yoke 50 pivoted on the sleeve andconnected by a rod or drag cable 52 to a suitable operatedmeans, notshown. The yoke may be 40 provided with cam surfaces 54 engaging thering 'br collar 48.

In operation, assuming that the wheel is rotating and is carrying withit friction element 38 and that this member is rotating freely betweenthe frictional members on the fixed element I4, and the movable element4Il, force is applied to rock the yoke SII,` whereupon the cams engagingthe ring 46 cause axial movement of the friction element 4II toward thefriction element on the 50 flange \I4, whereupon the friction element 38is `-moved axially and is clamped between the fric. tional lining toeffectively retard the rotatable movement of the wheel.V

Although this invention has been described in 56 connection with certainspecific embodiments, the principles involved are susceptible ofnumerous other applications `that will readily occur to persons skilledin the art. The invention is, therefore, to be limited only as indicatedby the scope of the appended claims.

Having thus described the various features of the invention, what Iclaim as new and desire to secure by Letters Patent, is:

' 1. A brake structure comprising a xed member having a circumferentialflange having a friction face thereon, a member having a second frictionface axially movable on said xed member, means extending longitudinallythrough said fixed member and secured to said axially movable member atone end, an annular thrust member secured to said means at the otherend, and actuating means pivoted on said fixed member and engaging saidthrust member.

2. A brake structure comprising a fixed member having a circumferentialange having a friction face thereon, a member havinga second frictionface axially movable on said fixed member, a rotatable axially movablemember positioned between said faces, means extending longitudinallythrough said fixed member and secured to said axially movable member atone end, an annular thrust member secured to said means at the otherend, and actuating means pivoted on said fixed member and engaging saidthrust member.

3. In combination with an axle having a wheel positioned thereon forrotation, a sleeve secured on the axle providing an axle and shoulderincluding a circumferential flange constituting a friction element, ashoulder on the sleeve and a grease retaining Washer on the sleeve andabutting said shoulder.

4. In combination with a stationary axle and a wheel positioned thereonfor rotation, a friction element carried by the wheel, a sleevepositioned on the axle providing an axle shoulder for positioning saidwheel, a flange formed integral with the sleeve, and a flange movableaxially on the sleeve.

5. A brake structure comprising an axle, a sleeve keyed thereonproviding an axle shoulder, a flange on the sleeve constituting afriction element, a disc movable axially on the sleeve, a rotatable andaxially movable friction element between the flange and disc, a wheel onthe axle journalled entirely on one side of said shoulder and having asplined connection with the outer periphery of the rotatable and axiallymovable friction element, and means for moving the disc "whereby saidbrake forms a separable unit from the wheel, and whereby the wheel maybe removed without disturbing the brake, and positively positionedrelative to the brake.

6. In a brake structure the combination of a wheel having a rim and atire retaining flange and a recess thereunder, aefriction discpositioned within the confines of the flange, means connecting the discat its periphery to the wheel for rotation therewith and for axialmovementl and cooperating friction means forming a wheel abutment, saidwheel being journalled entirely on one side of said brake whereby saidwheel may be removed without disturbing said brake and replaced inpositive proper position with reference to the brake.

7. A disc brake actuator comprising a ilxed collar member having afriction disc flange thereon, a yoke pivoted on said collar, an annularmember adjacent said' collar and adapted to be engaged by said yoke andmeans connected to said annular member passing through said collarmember and secured to an axially movable friction disc at the other sideof said collar.

FREDERICK C. FRANK.

